von pein



3 Sheets-Sheet 2 g E m Na mm Filed Dec. 30, 1953 March 16, 1937.

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E. J. VON PEIN SCALE CONTROLLED RECORDER March 16, 1937.

Filed Dec. 30, 1933 3 Sheets-Sheet 3 VENTOR 4 flu ATTORNEY Patented Mar. 16 1937 UNITED STATES rotates SCALE CONTROLLED RECORDER Edward J. Von Pein, Dayton, Ohio, assignor to International Business Machines Corporation, New York, N. 'iL, a corporation of New York Application December 30, 1933, Serial No. 704,783

Claims.

This case relates to a combination weighing scale and weight recorder.

- The object is to provide novel means for controlling operation of a recorder by the scale.

A further object is to mechanically operate a graphic recorder under remote control of a scale.

Various other objects and advantages of the invention will be obvious from the following particular description of. one form of mechanism embodying the invention or from an inspection of the accompanying drawings; and the invention also constitutes certain new and novel features of construction and combination of parts hereinafter set forth and claimed.

In the drawings:

Fig. 1 is a schematic and circuit diagram of the scale and intercontrol between the scale and recorder.

Fig. 2 is a side view of the recorder.

Fig. 3 is a side view of the digit recorder in operated position.

Fig. 4 is a plan view of one of the recording units.

Fig. 5 is a side view of part of the recorder in operated position, and

Fig. 6 is a detail of the printing hammer and its operating means.

For the purposes of the disclosure, the invention is herein described in its application to the scale disclosed in Patent" No. 1,914,388.

In brief, the scale, when load is applied, rotates .a shaft ill in accordance with the load. Shaft l0 carries an arm ll provided with a conductive strip i2 which moves in a circular path lying within and slightly separated from the inner circular terminals of radial conductive bars 13 and the inner circumference of conductive ring 14. There is one bar l3 at each unit load or pound point of the path of strip l2. Behind bars I3 is a perforated mica disk l5 covering circular bands I6 corresponding, in one denominational order, to the digits of the order. Mica disk I 5 has perforations ll selectively exposing the bands Hi to cooperate with bars l3 for translating the load. Assume that the load on the scale is 9 pounds. The shaft [0 will move the strip l2 into radial alinement with a bar l3 at the 9 pound load point. This bar I3 is in front of a perforation I! which exposes the band I6 corresponding to 9 inthe units order of the recorder. When a high'tension spark is jumped from common ring M to strip l2, the latter is electrically charged to in turn jump a spark to radial bar l3 at the 9 pound position. The bar on l3 in turn jumps a spark through a perforation ii to charge the conductive band It corresponding to 9 in the units order of the-recorder.

The high tension circuit for forming the sparks to bridge the gaps in the chain of conductive elements above described, is formed only when the scale comes to rest under a load, as follows: The scale when load is applied, sets a beam IS in motion to move a plunger it in a main dash pot 20 connected to a smaller auxiliary dash pot 2i in which a light plunger 22 is movable.

When plunger i9 is moved in dash pot 2B, the liquid in the dash pots 20 and 2:! surges to vibrate the plunger 22. The latter plunger oscillates a lever 23 having a spring strip 24 with contact points 25 between fixed contact points 26. Engagement of either of points 25 with either of points 26 closes a circuit through a solenoid 2?. This circuit is from the side of battery B through solenoid 21, strip 24, a contact point 25, a contact point 26, line 28 or 29, and line 30 to the side of battery B.

Solenoid 21 being energized lifts core 3i to release a pin 32 thereon from the spring blade thus separating contacts 34. As long as these contacts are separated, the high tension circuit for charging one of bands I6 is not formed. When the scale comes to rest, the beam it stops moving, plunger l9 comes to rest, the liquid in the dash pot stops surging and plunger 22 with strip 24 stops Oscillating. Contacts 25 then take a position spaced from contacts 26 and the circuit through solenoid 21 opens, permitting core 3| to descend and its pin 32 to close contacts 34. Now, if the operator depresses push button 35 to close contacts 36, a circuit is formed through the primary 31 of an induction coil C, as follows: From the side of battery B through lines 38 and 33,.primary 31, vibrator 40, screw 4|, line 42, contacts 43 (one of which is on the armature 44 of a magnet through lines 46, 41, contacts 36, line 43, contacts 34, and line 30 to the side of battery B.

Primary 3'! being energized, the action of vibrator 40 causes a high potential to be induced in secondary 5B of the induction coil. One side of the secondary 50 is connected to common ring id to charge the latter and cause sparks to jump from ring l4 to strip I2, from strip 12 to bar i3 in radial alinement, and from bar i3 through perforation I l to the conductive band H3.

The charge on band I6 is transmitted by line 59 to an associated high tensionmagnet 52 from which a return lead 53 is-direoted to the opposite side of the secondary 50.

As soon as high tension magnet 52 is energized,

tension magnet 57 to which armature 54 is common so that energization of magnet 51 holds armature 54 depressedto maintain contacts 55 and contacts 56 closed. The circuit through magnets 65 and is as follows: From the side of battery B through lines 38, 58, upper contacts 55, the magnet 51 in series with these contacts, line 59, magnet 45, line 4I, contacts 36, line 68, contacts 86, and line 38 to the side of the battery.

The armature 54 being held down by the energized magnet 51, the lower pair of contacts 56 remains closed. Each pair of contacts 56 is connected in series by a line 68 with that one of the contact points 6| oi" the recorder corresponding to the same digit in the same order as the one containing contacts 56.

At the completion of the selection period by the scale, for a multi-denominational order load, there will be a pair of contacts 56 closed corresponding to the digit of the load in each of the orders. correspondingly, in each order of the recorder, that one of the contact points 6| will be in series with a closed pair of contacts 56 corresponding to the digit of the load in the same order. These selected contact points 6| are thus live spots potentially capable of exercising control over the recorderoperation which will be described below.

For convenience, only one order is shown, it being understood that the operation of the other orders is similar to the one illustrated.

Referring to Fig. 2, the recorder includes a rockable operating handle 65 fast to shaft 66 having crank arm 61-with a crank pin 68 coacting with slot 69 in the arm I8 of a lever II to rock the lever II clockwise, when the handle 65 is pulled toward the left (as viewed in Fig. 2). Lever II is freely pivoted on shaft I2 and has an upper arm I3 which at its outer end rigidly sup- I8 in a manner to retain the pawl nose 88 of pawl I6 clear of teeth 8| in a rack segment 82 freely pivoted on shaft I2.

Member I9 is constrained to slidable movement by shaft I2 and fixed rod 83. Normally, member 19 is retained in position shown in Fig. 2 by engagement of a pin 84 thereon with the nose 85 of a pivoted pawl 86. This pawl has an armature 81 which is in coaction with a magnet 88. The magnet is energized when feeler I4 of lever II engages the live contact point 6| in series with theclosed pair of contacts 56, selection of which by the scale has already been described. The circuit through magnet 88 is as follows, referring to Fig. 1:

From the side of battery B, through lines 38, 58, closed contacts 56, line 68, the serially connected live contact point 6|, feeler I4, common bar I5, magnet 88, push button contacts 36, line 88, contacts 34, and line 38 to the side of the battery.

When magnet 88 is energized, it rocks pawl 66 it attracts armature 54 to close an upper pair of contacts-55 and a lower pair of contacts 56. C1osclockwise, releasing pin 84 and permitting a spring 89 to shift member I9 to its outer position shown in Fig. 5. In moving to the outer position, slot I8 moves pin II outwardly to rock pawl nose 88 of pawl I6 into engagement with a tooth 8| of member 82. The engagement of pawl I6 with member 82 connects the latter to lever II for common movement. Pawl I6, in effect, provides a releasable driving connection or coupling between lever II and member 82 and when the pawl is engaged with member 82, movement of lever II is transmitted by the coupling or driving connection, pawl I6, to the recording devices to be described and of whichv member 82 forms a part.

Energization of magnet 88 results, as described, from engagement of feeler I4 with a selected contact point 6|. Whenfeeler I4 engages the contact point 6|, pawl nose 88 is directly over the notch between teeth 8| which corresponds to the digit represented by the contact point. As lever II continues in motion while pawl nose 88 is moving towards the aforesaid notch, the pawl nose may pass the correct notch and engage in the succeeding notch. To prevent this and at the same time permit the pawl I6 to pick up the member 82 smoothly, the latter is given a clockwise movement in the same direction as lever II while the pawl nose 88 is moving towards teeth 8|.

This movement is imparted to member 82 as follows: While member I9 is moving outwardly to rock pawl nose 88 towards teeth 8|, the walls of an inclined slot 98 in the member I9 'cammingly coact with a pin 9| on member 82 to move the member 82 clockwise. pled by pawl I6 to lever 'II and continues to move clockwise with the lev r. Pin 9| moves along the arcuate edge 92 of member I9 to positively retain the latter against inward movement during the remainder of the clockwise movement of lever II, thus preventing breaking of the coupling between lever II and member 82.

Member 82 is formed integral with a rack segment 94 meshed with rack teeth 95 on a slidable bar 96. The upper edge of bar 96 is formed with.

teeth 91 meshed with teeth 98 of a type wheel 99. The wheel 99 has type formed on the top of each tooth, the type being in successive order,

N (representing neutral position), 0, 1, 2, 3, 9. Initially type N is at printing position below the hammer tip I88 of a pivoted hammer I8I.

Contact points 6| are arranged in descending order to correspond to digits 9, 8, 'I, 6, 8, as indicated in Fig. 5. -If the first contact point corresponding to digit 9 is the selected live spot, the member 82 will begin moving clockwise when feeler I4 engages the 9 spot and will continue moving with lever II until pin 11 contacts the lower end wall of slot I8 of member I9 and terminates the forward stroke of lever II. The end of the forward stroke of lever "II is one step or position past the 0" contact point and is inhas started moving when feeler I4 reached the 9" contact point 6| and continues to one position past the 0 point, it will have moved altogether ten steps or positions. This movement is transmitted through rack 94 and teeth 95 to a ten step movement of bar 96 which in turn, through teeth 91 and 98 rotates type wheel 99 ten steps, bringing the 9 type at printing position to print on the record card T located between hammer tip I88 and the type wheel. The card is supported on. a die plate I85 below a column of punch pins I86 for perforating the .cardwith aovaooe a holev designating the load according to the Hollerith system of tabulating data.

There are ten punch pins it, corresponding to digits 0 to 9. The pins are selected for operation by movement of the bar 96 simultaneously with the positioning of type wheel 99 by the bar. This punch selection is efiected by an interposer lug It? carried by the free end of a flat spring plate I08 pivoted at I09 to an upright Mil provided on bar 95.

A spring ill between the upright Hi3 and spring plate we normally holds the plate against a stop iI 2 with interposer lug it? held clear above the upper ends of the punch pins. When bar as has completed its difierential movement to the right, the lug ill? will be located above the punch pin we corresponding to the selected digit and to the type at the printing position. Impositively locking pawl Mil coacts with notches M5 in bar 96 to retain it in one of its selected positions.

After type wheel 99 and interposer lug act are difierentially positioned in accordance with the load, the printing and punching operations take place. The means for efiecting these operations comprises a cam Mt on shaft 6% which depresses a roller 1120 on a lever I22, after the lever it and member 32 have completed their forward and clockwise strokes, but before the end of the forward stroke of handle 65 (counterclockwise as viewed in Fig. 2). During the depression of lever I22 by cam ltil, the crank pin 6% is moving along a dwell H23 in the slot 69 of lever it so that the handle 65 while lever 522 is being depressed is not attempting to move lever H to disturb the selection of the printing and punching elements.

Lever B22 when depressed by cam are, through a link I125 lowers a slidable member 1126 which has a plate i2? at its upper end overlying the interposer lug IIl'l, thereby depressing the lug and causing it in turn to depress the selected punch pin ID? to perforate the card '1. Member I26 has a horizontal projection 828 (Fig. 6) above a pin I29 on the pivoted hammer Illt so that on member i2l'3. moving down, the projection I28 depresses 7 the hammer i011 to cause the hammer tip I00 to the member I9 to the left to replace its pin- 84 behind armature pawl 86. The parts are now in starting position.

Preferably, a graphic recorder is coupled with the recording unit just described .to provide a graph record of the load and its variations, being particularly useful with continuous flow or hopper feed scales.

The graphic recorder comprises a pulley I fast to the back of member 82 to move rigidly therewith. Pulley I35 is connected by cable I36 to a pulley I3? fixed to shaft I38 which carries an angular bracket I39 to which is pivoted a counterbalancing sleeve holder I40 for a stylus MI. The rear end of the stylus is bent down to move in adamping and inking device I42 while the front end contacts graph sheet I43, suitably fed by suitable means as by aclock motor (not shown).

When the member 82 is moved on its return stroke, a spiral spring M5 connected to shaft 638 returns the shaft and stylus H ll to starting position.

To summarize the operation of the device briefly; a load of, say 295 pounds, is applied to the scale, moving conductive strip I2 into radial alinement with the radial bar it at the 295 pound position. Push button 35 is now depressed, but has no effect until the scale comes to rest under the load to close equilibrium-sensing switch 3 To avoid unnecessary repetition, the recording of the load value only in the units order will be explained.

When switch 341 closes, the push button becomes effective to close high tension circuits through the common ring i4, strip i2, radial bar 93 at the 295 pound position, and through band it corresponding to the 5 value in the units order, to energize high tensionmagnets 52 connected to said band. The magnet 52 operates armature 5 3 to close upper and lower contacts 55 and 55, respectively, to energize low tension magnets 5'? for maintaining these contacts closed. Contacts 56 select the contact points iii which are to govern operation of the recorder. Thus, contact it marked 5" in the units order (Hg. 5) is selected. Handle 85 of the recorder is now operated without causing movement of the recorder until in the units order the live spot 80 is engaged by feeler M, whereupon magnet 88 is energized to couple the member 82 to the handle operated lever it for a differential movement to line A-A near the end of the forward stroke of the handle 65. Member 82 transmits its movement to type wheel 99, punch interposer M37, and stylus till. The cam H20 operates at the end of the forward stroke of handle 65 to cause printing and punching of the unit order load value 5 while stylus M! has, in the units order, graphically indicated 5 on the graph paper M3.

The term recorder used herein embraces one or more of the graph marking, the number printing, and the card punching mechanisms. The wheel 99 of the recorder may be termed an entry receiving device for receiving a load value entry.

The termfiexhibiting or representing means is used herein as a broad designation of the recorder and covers equivalent means for representing a load value whether in printed or other form. The following claims may interchangeably employ either one of such'terms in order to cover variations and changes due to mechanical skill.

What is claimed is as follows:

1. In combination, a driven element, an actuator for the driven elementv including a coupling normally released from the element, means for causing the coupling to drivingly connect the driven element to the actuator for a clifierential operation thereby, differential means for determining the extent of said differential operation, and means controlled by the differential means for setting the driven element in motion in the same direction as the actuator just prior to the couplingtaking efiect thereon to cause the pickup of the driven element by the actuator to be effected smoothly.

2. In combination a driven device, an actuator therefor having a predetermined cyclical movement, a coupling between the actuator and device, a movable latch for normally holding the coupling released from the device, a magnet operable at any of diiferential points of said cyclical movement for tripping said latch to cause the coupling to drivingly connect the device to the actuator for differential actuation to the end of said movement, a circuit for said magnet, and difierential electrical means for controlling said circuit to automatically and selectively determine thepoint of said cyclical movement at which the latch is tripped.

3. In combination; a driven element, an actuator therefor, means for coupling the element to the actuator including a device operable to render the coupling means effective for drivingly connecting the element and actuator, differential means for controlling-operationof said device to render the coupling means efiective during the movement of the actuator, and coacting means on the device and the driven element eflective, when the device is operated to render the coupling means effective, for setting the driven element in motion in the same direction as the actuator.

aovaooe motion prior to the coupling xn taki ect.

4. The combination as defined in claim 3, and the aforesaid coacting means including a cam on the device and a cam follower member on the driven element.

5. In combination; a driven element, an actuator therefor, a releasable coupling for drivingiy connecting the element to the actuator, a movable device movable to render the coupling efiective to drivingly connect the element to the actu= ator, difi'erential means for causing movement of the device to render the coupling effective for drivingly connecting the element to the actuator at a diiierentiai point of the movement of the actuator, and means on the device and driven element coacting after the differential actuation of the element for moving the device to a position for restoring the coupling to inefiective coupling condition. 

